[Guild] Hero for Guild Maps

Is Alchemist better for Guild Maps?
is the skill Melt Armour can be debuff by the Mantra? Im currently searching for an answer to this, cause Im almost done in mines so I'm Choosing if Odin or Alchemist is the best Hero to Pick.
Note: I will use this hero for future use too.

F2p vile sonstress is best for player vs.player, for guild maps its warlock from tournament points, alternatively for mines I think hydra is easiest/effective with few shards from secret codes. CODES: Gjjb5aw8u787,ghu6baqnhdsc,gh6v69vdj55f,gxqx3n7bvk5j,gb8rdewqeyhn

dont need 5 star heroes for maps. beserker. zora. gladiator. patriarch. chaos witch. predator against hero kill. ive done millions of damage with all these heroes. i think you would be better off investing ore in a tournament hero. alchemist is cool